The Discreet Carbine Case from NcStar will fit a M4 carbine with a 16 Barrel, with the carbine broken down into separate upper and lower receivers. This fully padded case will protect your rifle and gear while on the move. Features:- Lockable heavy duty zipper for the main compartment (lock not included).- Durable carry handle strap.- Padded main compartment lined with Velcro and PAL webbing to customize the interior of the case- Two padded dividers with Velcro and securing straps capable of dividing and protecting the upper and lower receivers, as well as accessories.- Four Velcro straps included to secure upper and lower receivers in place- Two 10 x 10 zippered mesh pockets to hold accessories and magazines- Adjustable shoulder strap and metal D-Rings for comfortable transport- I.D. holder on the outside of the case Specifications:- Dimensions: 26 L x 13 W x 3 T..